Bạn đã biết sử dụng nước đun sôi để nguội đúng cách?
Nước là một trong những thành phần cơ bản và cần thiết cho cơ thể con người. Nước chiếm 60 - 70% trọng lượng cơ thể. Ở bào thai, trẻ em tỷ lệ này còn cao hơn nữa. Con người có thể nhịn ăn một vài ngày, thậm chí một vài tuần nhưng không thể thiếu nước.
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